Analysis of permeability changes of the Astrakhanskoye field rocks while implementing the method of directional unloading of the reservoir based on X-ray computed tomography.

This article describes the results of physical modeling of deformation and filtration processes in the rocks of the Astrakhanskoye gas-condensate field when implementing the method of increasing the permeability of low-permeability rocks - the directional unloading method. The experiments were carried out on the unique Triaxial Independent Load Test System (TILTS) of the Institute for Problems in Mechanics of the Russian Academy of Sciences (IPMech RAS). A digital model of the internal structure of the rock by X-ray computed tomography methods was obtained. A digital analysis of changes in the filtration properties of rocks based on the experimental data of the micro CT study is carried out. It is shown that the directional unloading method can be successfully applied to low-permeability rocks of the Astrakhanskoye field. [ABSTRACT FROM AUTHOR]